We were originally going to stay here for 3 days in a double room with private bathroom, but due to the travel timing we had to change our stay to 2 days. The staff were extremely friendly and gave us a refund without a fuss. They were very helpful and great to chat to, and would go out of their way to help. They even offered us a free beer before we left!
We went to the Iguazu falls during the day and then left on a bus at 9pm, and they were happy to store our luggage and we had a shower and got organised before we caught the bus which made our day much easier!
There were good common rooms, a pool table and a nice balcony. Laundry service was available for 25pesos a load. Staff also speak great english and they organise tours to the falls from the hostel. They have a sister hostel 20m down the road which put on a great buffet one night which they gave us a discount for. They also have a pool which was out of order when we were there. Bathrooms were good and clean with plenty of hot water.
The only downside was that the our room (and most of the doubles I think?) faced out over the balcony and the road and this was very noisy at night with traffic and people.